SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '77981cafbc127900ca3697864fd254fee95cc041e77cd7edb44f23df48b9d66c' 
  AND token = 'cuCrKmDB+j6MlVlx8MKzfvcR+u4pUL3H/UOAzHJ2C/w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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