Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e56e43f36e9e5040bd165adb0f3c6e6a78d27b8eb5f27d84abd8ffb8c1e06132' 
  AND token = 'gkCgmtirUDA+Uryib6B1aymSEqroXcD8zs/UGFvfD68=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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