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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '895dacc221eacdd2d7952332616d8062255f45c8c294526524b3e86680be424c' 
  AND token = '9l6JGu1W0gXZERt0aXfI9hpGJDensPASewgnP4cPgvc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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