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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '01fa7d557db1ee5d54c63ae8fad7c396d7e47034b65cfdcb55f567ea7542cf95' 
  AND token = 'j78s7Y3zXficTX7Wnnr/uVecfWbXfRF8q54Pauqw+eg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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