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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '43278cfa788d1c8d1470c3174a0b3014dda3414c409ec7e63d05c25e8e360584' 
  AND token = 'zW8zVuApJO7DwglLzt1MHHcN4Nk5yDNxIgneiNg1QYE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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