Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3801d503ad51a1236cb6b1e71dfa3517aa0531ac16f9392362a12080c05020e5' 
  AND token = '1DfuxGN8DR2orURzRd+UREnhEMXm4jkhPJsfDNSK8lE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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