Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '292b39bcfe399d6c9e978446ed219c4f6de45becce302ab55c71f54838a3a00c' 
  AND token = 'AfZ04oo4BK9MhWBUq+lre4/Mo6dftQAE/Tc9VMUQCPY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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