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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7b60735cceec970067610da489331b1dd6763b7dd5f33e251bb8b5f4d20645bd' 
  AND token = 'ZESPRviEa5Z56utETsaRb2ZtJ0Q/G8PR6E59D4DDn3s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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