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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7295c2840f66b76f36056fa5b57d6585ccbf95d0d266b41c5ac1eff3c564aac0' 
  AND token = 'J0JwkS+GVeob3C7/fSzA1Lct3+lotUpO/1Gr3nmxjuc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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