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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5d33abf67685524b391ee7ab0c4809a466905f2f636283254c12e3183368f65b' 
  AND token = 'ENViaIlFXZIXx8i0HPO66gbNp3HMQelsiwA2bxQLwOE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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