SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '78cbf077de1f929fb01096e4877cc8b8db55038448b0801f3cd8699158dab5ce' 
  AND token = 'BBW0J8J4aLUZHnjAllP2+N4TvqE2sHluLDDGQwF2GNg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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