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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e3cb219593f681d8d23d0b36e0d2d8bbe4bc1962c6da4c73e4f6acce5051a063' 
  AND token = 'D5M0iYhadLvYb2oaIfZaz9foW28H2nLgz2Q7OsdrtUY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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