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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5bb09a81a2b26b6826d4d262a2e0861fe35e9dd09126927d3aa1837900285872' 
  AND token = 'U/2HCg6D6x6vrMA1JrDAOKGta1sMkRPE8qQH4/3ZRAE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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