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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '792c31f112e4d6e71b9a17bd1c87bab22fd4a81617b2fdd90e933b613bf4f9ea' 
  AND token = 'Y5OX0xDz5qpgWntcd+KJnjtcb5yJDAxJ2J6+KoAYJCE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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