Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '722940153430dafe3ed40aefeceb296694372bb498c59d38cb3ee051028dcab3' 
  AND token = 'jMns1GwyFO4s7Qv6xYXBxDVBXTQ5xXsrLmI7JwVeswc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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