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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '48730bcc6fe5558e5e377daf22f784f7fca397525f761d291d7dc73a26810594' 
  AND token = 'Dcj31o6nOxA4nxjgIRRx6HKC8f/GGzbafqJ1yeGT1JA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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