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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '227068d5c673b6e353cc2106888469d8b0b793a6bc0d9c22aeb8c02381eb8d48' 
  AND token = 'Cm0YGfqXBCiZs8bt+9q+a/GSL8BQDDYNOXI5vhcR7Ds=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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