SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ffb90cd732efebd7e794bc0adea03ad70689c5a4bb13f326eea823415d22fcb5' 
  AND token = 'vfPl2TlmJZD6jiAWBJawt2nGuYim/qI4YoPLSCx9n5o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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