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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22a57c63852c7d5781a9132cb341e17ac0ec3d6e3f65ca3a2508426ac28139c7' 
  AND token = 'y7tt7og5Q/9+ubAHrOxlUi8031rWAUhssa8Yn9wX2A0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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