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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8e712fe577b5d133b24d9fdbcea1afc3596304ebfcce39ad65883ca091960271' 
  AND token = 'pb/1NfQZXw0dzx2a90ne1FrYT8eKJdXumucUrQkz/AA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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