Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea61f12aba0c22d5009986a65b131df59cbe797f536afa38989b959e49f25bd0' 
  AND token = 'dD/0AVrWnGftOvcgFSAe4s2YrLAiiZEplFdXJ2A/rxg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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