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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e48ceb8c9d2890927935b781215522b8b23365d4bd325053c57c6ffb3ec9256' 
  AND token = 'tLlv1HWaTUutQ0q2FIVQASfrH0KBRHTYGxblU/5pk90=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}