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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e04cdb4a853f479ac15c6b7f7858e31eb07e3bdaae99da49fce06b644c4fd2d4' 
  AND token = 'ixyiDV43ueDwhp3D2RWizBYMTIqA8lJU4pfSFIzerwk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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