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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d56beef0e443d832567dfb32101581484c2659d30badafc7e8bfbe6232451aa' 
  AND token = 'ayIxIOI/aDG6yBaS0WM2XVqZQ/mFerj0NwjJk22S/AQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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