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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '80900701c740d624aac555fb48ad2d0a24849f51cc6ba54776064ce2de85b9cb' 
  AND token = 'LxPDP4x9xd/ExGFlpq/rpyl0s1kZjyOFkxp8fdPamPU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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