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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'cfc4ece0f918b984ae64e486179e629ba13ff07ca7d3c7e3a289627adea76f67' 
  AND token = 'fT5PJmUXDYs+6j9D3EEBiXvsklUBAzwjlkvVScWcd2M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00063

JSON explain

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