Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95629390002e6f8779c7946adaf9974277161453fa7d5c5c1386563974909d31' 
  AND token = 'PPBpsXJ7pd8ZgUl2C1I4gSsScaJuWL0AoXPGrnTWcrQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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