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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2515ac385eaef9d2a72a734b9f07be2aa2675f20e45e17bbef30291311f945af' 
  AND token = 'VGarNAj1KLx+h3dSPBWjlJHHlZRu1NF0i/Y7C1LLlsM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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