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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '88f4f1fa08ee6ea9d26f764f7c1b2fb2a0dfeddb10dc7acbddfe7b4303b9ca58' 
  AND token = 'g7a9s06db1tFe8rTKIsfqmoFf4lNnTMCZDjaZC0Ljaw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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